fixed background color of samples.

Author: AndroidDeveloperLB

library/src/main/java/com/alamkanak/weekview/WeekView.kt

@@ -1226,7 +1226,7 @@ class WeekView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
     }
 
     override fun onDraw(canvas: Canvas) {
-//        super.onDraw(canvas)
+        super.onDraw(canvas)
         // Draw the header row.
         drawHeaderRowAndEvents(canvas)
 

sample/src/main/res/values/styles.xml

@@ -9,6 +9,7 @@
         <item name="actionMenuTextColor">@color/toolbar_text</item>
         <item name="popupTheme">@style/ThemeOverlay.AppCompat.Light</item>
         <item name="colorControlActivated">@color/accent</item>
+        <item name="android:windowBackground">@android:color/white</item>
     </style>
 
     <style name="AppTheme.FullScreen" parent="@style/AppTheme">